PCB 3044 Chapter 9 - Chapter 9: Population Growth and...

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Chapter 9: Population Growth and Regulation Life tables Age structure Exponential Growth Effects of Density Logistic Growth Life Spans Type I: Humans Type II Type III: Turtles Growth Rate in Human Populations Rapid growth Zero growth Negative growth Age Structure The growth rate (lambda) can be calculated as the ratio of the population size in year t+1 (N sub t+1) to the population size in year t (N sub t). Exponential Growth Concept 9.3: Populations can grow exponentially when conditions are favorable, but exponential growth cannot continue indefinitely. In general, populations can grow rapidly whenever individuals leave an average of more than one offspring over substantial periods of time. Geometric growth (changes in size from one discrete period to the next): o N sub t+1= (lambda)(N sub t) o Lambda= geometric growth rate ; also known as the (per capita) finite rate of increase . o
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This note was uploaded on 11/13/2009 for the course PCB PCB 3044 taught by Professor Woo during the Fall '09 term at University of Central Florida.

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PCB 3044 Chapter 9 - Chapter 9: Population Growth and...

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